Vintage ELSENER/SCHWYZ (Victorinox) Swiss Army Kni fe model 1951 from 1954 An excellent ELSENER model 1951, hard to find in this condition. The backsprings closed the tools with a marvellous snap. Karl Elsener, the founder of Victorinox.The item "Vintage ELSENER/Victorinox Swiss Army Knife model 1951 from 1954" is in sale since Tuesday, August 15, 2017. This item is in the category "Collectibles\Knives, Swords & Blades\Collectible Folding Knives\Modern Folding Knives\Factory Manufactured". The seller is "aristowatch" and is located in Glatten. This item can be shipped worldwide.